Application
HS28H encoder modules are designed for use in stepping motors, automated equipment, and robot arms.

Features
The modules are characterized by their low cost, small size, and easy mounting.

Resolution
Available resolutions include 500, 512, 625, 1000, 1024, 1250, 2000, 2048, and 2500 pulses per revolution (P/R).

Electrical Specifications

• Resolution: 500 to 2500 P/R
• Output Circuit: Z□LT
• Supply Voltage: 4.5 to 5.5V
• Maximum Supply Current: 100mA
• Signal Types: A+, A-, B+, B-, Z+, Z-
• Maximum Rise/Fall Time: 100ns
• Frequency: 300 KHz
• Output Voltage: High (H) 2.4V min, Low (L) 0.4V max
• Maximum Output Current: 20mA

Mechanical Specifications

• Hollow Diameter: 4, 5, 6, 6.35 mm
• Housing Material: Aluminum
• Maximum RPM: 6000 rpm
• Net Weight: 30g

Environmental Specifications

• Operating Temperature: -20 to +85℃
• Storage Temperature: -20 to +85℃
• Operating Humidity: Max 85% RH, non-collecting
• Shock Resistance: 490 m/s², 3Dx2 times
• Vibration: 1.2mm, 10~55KHz, 3Dx30min
• Protection: IP 40

Connection
Signal connections include A+, A-, B+, B-, Z+, Z- with a JST SM09B-GHS-TB connector.

Output Waveform
The shaft rotation is counterclockwise (CCW) with specific timing for signals A and B.

Output Circuit
The module uses a line driver (AM26C31) for output.

Ordering Information
Details on ordering include resolution, type number, phase, cover type, and other specifications.

Cable Introduction
Cable lengths available are 305mm and 500mm.

Setting Dimension
Includes axial assembly tolerance, radial assembly tolerance, and concentric angle tolerance.